Stability analysis of anchored rock slopes according to Eurocode 7

Sa？etak Ensuring the rock slope stability during and after excavation by prescribing long-term protection measures is one of the frequent tasks of practical geotechnical engineering and rock mechanics. The paper presents an example of determining optimal carbonate rock mass strength parameters and assessing the stability of the anchored rock slope. The rock mass failure criterion is defined by the generalized Hoek-Brown's strength criteria, using the results of geotechnical investigations, where the rock mass is divided into five different geotechnical zones. Analysis of global slope stability formed by excavation the cut height up to 25 meters is carried out according to the rules of Eurocode 7, project approach third. For the stability estimation the relevant sliding surface was selected. An analysis of the unstable block in the case of global sloping and flat sliding was performed on discontinuity. It is assumed that discontinuity is provided in the direction of excavation. In order to compare the obtained results, the safety factors were calculated with and without seismic earthquake effects and control was carried out using a commercial computer program for slope stability analysis